I’ve never had this issue but there was a Thread in 2009 that discussed this problem:
“Proto 2K cracked or split gears? Started on 9-26-09”
Just do a search for cracked gears proto locomotives and this thread will pop up: I took a quick glance at it and it seems appropriate for your problem.
You can get the axle/gear/wheel assemblies from Walthers but it will cost you. I have used the Athearn gears for the 2 axle trucks to replace the cracked P2K gears. The Athearn gears are cheaper and it is an easy job to swap out. I once bought 4 axles from Walthers for a GP9 and with shipping it was over $10. Six months later the same loco was skipping to the beat of the cracked gear drum. I called Walthers and was told there is no warranty on replacement parts. I said thank you and called Athearn and bought 24 gears with shipping for $6.
Although Athearn’s parts department lists the gears (60024) as being for an SD 40-2, they will fit practically any Athearn diesel except Genesis, and practically all P1K and P2K locomotives.
No, I didn’t find the thread but I knew the reason he couldn’t find it was that he was pasting the entire line in the search line. I simply cut the garbage off it so it would work.
The problem you had with the search function was my fault: I was pretty sloppy in my written instructions and should have been more precise in how to use this valuable tool. I apologize for my lack of clarity…[:$]
Thanks Jeff for taking care of this and explaining the proper use of the search tool…
I’ve never heard of any of Proto’s “Tune Up Kit’s” cracking until I read this thread. [:S] I’ve replaced probably 30 loco’s wheel sets with the Kit’s and never had a problem ever again. I was lucky, I got mine for free when Walthers first bought Proto.
I used athearn replacement gears. They are tighter on the axle than the orginals. I press them on with two blocks of wood. Then spread them a little to my flange gauge. Hope this helps, NKPMIKE
1st place hobbies carries these, at a discount. I just received 8 packages of the Athearn 60024 replacement axles from them on Thursday. Fixed three locos this weekend…